Water-pressure ejector



A. R. GRIESEMER WATER PRESSURE EJEOTOR Dec. 30, 1 924.

Filed July 5, 1925 INVENTOR.

AR. Gz Lesemer Q mm TTORNE Y Patented Dec. 30, 192 I EZ warren staresParent caries.

ABRAHAM R. GRIESEIVIER, OF SAN FRANCIQCO, CALIFORNIA.

WATER-PRESSURE EJEC'I'OR.

Application filed July 5, 1923. Serial No. 649,530.

To all whomz't may concern: In the drawings similar characters of ref-Be it known that I, ABRAHAM R. Gnlnsnerence indicate corresponding partsin the 55 MER, a citizen of the United States, residseveral views:

ing at San Francisco, county of San Fran- Fig. 1 is a side elevation ofthe device. 5 CISCO, State of California, have invented cer- Fig. 2 is avertical section, and

. taln new and useful Improvements in lVabig. 3 1s a top plan view.

ter Pressure Ejectors; and I do declare the Referring now' moreparticularly to the 60 following to be a full, clear, and exact decharacters of reference on the drawings, the scription of the same,reference being had numeral 1 denotes a body of suitable size to theaccompanying drawings, and to the and exterior form having attached toits characters of reference marked thereon, upper end incoming anddischarge pipes 2 which form a part of this application. and 3respectively, made of a strength suffi- 65 This invention relates toimprovements in cient to withstand heavy water pressures, under-waterdredging or excavating devices, the pipe'2 being somewhat larger thanpipe and especially to a type particularly adapted and intended forsinking holes in the beds of The pipe 2 leads primarily to asubstanstrearns, and bodies of water generally, for tially bowl-shapedchamber 4 formed in the 70 removing dirt from around piles, piers, etc.bod The pipe 3 communicates with a verand in general for use inexcavating small tical discharge chamber or passage 5 extendareas at atime, in any place where the maing to the bottom of the body. Leadingterial being worked on consists of sand, mud, from the chamber 4 to thepassage 5 and terr gravel or any more or less finely divided min'atingin an upwardly projecting tip of 75 material. 7 reduced size is apassage or jet member 6, My present device has all the advantages formedintegral with the body, and designed of operation had with the ejectordescribed to discharge straight up into the passage 5 and featured inPatent No. 1,459,153 granted and pipe 3 and yet not choke said passageto me June 19th, 1923, with however certo any detrimental extent. 0 tainimprovements 1n construction, the ad- Pro ecting below the body directlyunder vantages of which are manifested in a lesthe chamber andcommunicating therewith sened expense for the necessary accompanyis aY-bend or lateral pipe fitting 7 at whose ing accessories or equipment,and also with lower end is mounted a nozzle 8 provided a lower operatingcos. with openings 9 set at suitable opposed 85 The above advantages areobtained by angles to the vertical axis of the nozzle and constructingthe, ejector so that both the exbody, the nozzle being removable so thatcavating and loosening of the solid matethe type of nozzle used may suitthe material, and the raising of the same to the surrial being workedon. face is done by means of acontinuous cir- Attached to the side of/the fitting is a jet 90 culation of water under pressure alone, inpipe10 whose outer end projects upwardly stead of with the aid of an airblast as in in vertical alinement with the axis of the the previousdevice, and to provide a depassage 5 and which terminates a certain viceso constructed that this method of operdistance below the lower end ofsaid pasation may be successfully carried out forms sage. This jet beingpreferably of smaller 95 the principal object of the present invensizethan the passage 11 leading from the tion. chamber 4 to the fitting 7.Similarly the A further object of the invention is to combined area ofthe nozzle holes is less produce a simple and inexpensive device thanthat of the passage 11, so that neither and yet one which will beexceedingly the jet nor the nozzle will alone take all the 100 effectivefor the purposes for which it is water entering the fitting through saiddesigned. passage.

These objects I accomplish by means of In operation, a continuous streamof wasuch structure and relative arrangement of ter under pressure,provided by a force parts as will fully appear by a perusal of pump or;otherwise, is forced down the pipe 1 the following specification andclaims. 2. The volume of water thus supplied to the chamber 4 thenleaves the same through the jets 6 and 10, and also through the nozzle.

The jet 6 discharging directly into the passage 5 and discharge pipe 3,creates an upward flow of water in the latter, which of course exerts atendency to draw further water into the 'iassage :ibelow said Thistendency or automatically induced upward current in the lower portion ofthe passage 5 is aided by the upward discl'iargc from the lower jet 10,which acts on the water thereabout and induces an upward current fromtherebelow.

Meanwhile the water issuing forcibly from. the nozzle 8 loosens andstirs up the material aga nst which the nozzle is directed, and saidloosened material is drawn toward and mingled with the upward currentflowing into the passage 5, and of course passes then upwardly throughthe pipe 2 to be ultimately discharged at any desired point.

From the foregoing description it will be readily seen that I haveproduced such a device as substantially fulfills the objects of theinvention as set forth herein.

\Vhile this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention, as defined by the appended claims.

laving thus described my invention what- I claim as new and useful anddesire to secure by Letters Patent is:

l. A hydraulic lift apparatus including apressurc feed pipe and a liftpipe, the latter being of smaller cross sectional area than the former,a terminal common to both, the lift pipe being freely open through theterminal, and the feed pipe having an elbow within the terminal having arestricted discharge outlet upwardly into the l ft pipe wherebyliydraulic pressure from the feed pipe will provide a lifting forcewithin the lift pipe, a discharge pipe connected with the terminal andcommunicat'ng with the feed pipe, such discharge pipe having twooutlets, agitate the material to be lifted and the other curving upwardinto alinement with but below the open end of the lift pipe to maintaina constant current theretoward to keep the agitated material flowingthereto instead of being dissipated therefrom by the force of the waterfrom the agitating discharge nozzle.

2. A hydraulic excavator comprising sepone directly downward toaratepressure and discharge chambers, the latter being free .y open at itslower end, a jet from the pressure chamber discharging upwardly into thedischarge chamber, another jet connected with the pressure chamber anddischarging upwardly toward the dischar e chamber but positioned belowthe same, and a downwardly facing nozzle connected to the pressurechamber and positioned in a plane below the discharge chamber.

3. In a dredging apparatus, thecombination of a pressure feed pipe and alift pipe, the former being of greater area than the latter, and aplurality of outlets from the feed pipe, whereby fluid under pressuremay be directed therethrough to agitate and drive the dredged materialinto the lift pipe.

4. In a dredging apparatus, the combination of a pressure feed pipe anda lift pipe, the latter being open at its lower end, a passage from thefeed pipe directly into the lift pipe and facing upwardly in the latter,a discharge pipe from the lower end of the feed pipe, such a pipe havingtwo outlets, one directed downward and the other upwardly toward thelower open end of the lift pipe.

5. In a dredging apparatus, the combination of a pressure feed pipe anda lift pipe, the latter being open at its lower end, a passage from thefeed pipe directly into the lift pipe and facing upwardly in the latter,whereby some of the fluid under pressure in the feed pipe will be forcedupward] y in the lift pipe, and means mounted in connection with thefeed pipe and ar-- ranged to agitate the matter to be dredged and'tocause such agitated matter to be directed up into the lift pipe into thesphere of influence of the flow of fluid issuing into the lift pipe fromthe passage.

6. In a dredging apparatus, the combination of a pressure feed pipe anda lift pipe, the latter being open at its lower end, a passage from thefeed pipe directly into the lift pipe and facing upwardly in the latter,whereby some of the fluid under pressure in the feed pipe will be forcedupwardly in the lift pipe, and jet means mounted in connection with thefeed pipe and arranged to cause any matter in suspension adjacent thelower open end of the lift pipe to be directed up into the same and intothe fluid issuing into the lift pipe from the passage.

In testimony whereof I affix my signature.

ABRAHAM R. GRIESEMER.

